Die-support for tube-making machines.



C. D. GARRETSON. DIE SUPPORT FOR TUBE MAKING MACHINES; APPLICATION FILED MAR. 13. I915.

Patented May30,1916,

INVENTQR WITNESSES m a 99W I BY v 4i z (M ATTORNEY ED STATES PATENT OFFICE;

CORNELIUS D. GARRETSON, O1? WILMINGTON, 'DELAWARE, ASSIGNOR TO ELECTRIC I HOSE AND RUBBER COMPANY, OF WILMINGTON, DELAWARE, A'COBAPORATION OF DELAWARE.

DIE-SUPPORT FOR TUBE-MAKING- MACHINES.

Specification of Letters Patent.

Patented May 30, 1916.

Application filed March 13, 1915. Serial No. 14,111.

siding in Wilmington, county of New Castle State of Delaware, have invented certa1n new and'useful'Improvements 1n D1e-Sup-' ports for Tube-Making Machines, of which the following is a specification.

-My invention relates to. die supports for machines for forming metallic tubing and I have illustrated the same in connectlon with a portion of a machine of the type illustrated in the atent to Henry B. Cobb, No. 558,257, issued April 14, 1896. V

In tube forming machines it is necessary at times to chan e the dies for the purpose of substituting es of one size or capacity for dies of different sizes or capacities, larger or-smaller, so that tubing of larger or smaller diameter may be formed and it is one of the objects of my invention to provide means whereby a female die may be readily removed from the machine and another'female die substituted therefor.

A further object of my invention is to provide means whereby the female die of any set of dies may be adjusted transversely with res ect to the cofiperating male die member.

ther objects and advantages of my invention will be specifically referred to in the detailed description of my invention which.

vation with the dies in place; Fig. 3 is a view in end elevation of the female die holder, the sleeve for the same and the holder for these parts in assembled relation ready for insertion into the machine; and Fig. I is a transverse sectlonal view on the line 4-4: of Fig. 1, the parts being shown as enlarged. ix Referring to the drawing, l deslgnates a the construction as illustratedmy invention around a tube of hose or a tube of is adapted for the formation of a lead tube around a tube ofhose but it should be understood that it is not limitedlto such construction but may be employed in connec-f tion with machines. which are used for the manufacture of tubing'from any suitable 'metal other than lead and without regard to whether or not such tube is formed any other character.

The metal enters the die chamber 2 through a passage-way 3 formed in one side of the block 1. The male die or core-tube 5 is supported in the eccentric sleeve 6 which is secured in a screw-threaded opening 7 in the block 1. The male die- 5 is held .in

position within the eccentric sleeve 6 by means of a tubular screw-threaded plug 8 the inner end of which engages a washer 9 which is seated against the outer end of the said die 5. The forward end of the sleeve 6 is inclined as indicated at 10, substantially as in the patent to Cobb to which reference has been made. i

The block 1 is provided upon the end thereof adjacent to the forward end of the a male die 5 with a recess 20, the circular wall 21 of which is provided with projections 22 at intervals and intermediate slots or spaces 23. The said recess is adapted to receive and hold a supporting member 25 which is adapted to support and carry female. dies and their supports or carriers as will be hereinafter described. The member 25 is provided with a plurality of projections 26. The said member 25 is also provided with a polygonal portion 30 to rereceive a wrench by means of which it may be turned. The said member also includes an intermediate circular portion 31 which is adapted to fit the circular space 32 within the projections 22. The member 25 is interiorly threaded as indicated at 32 to receive a retaining or holding hollow nut 33 in which is situated a sleeve 35 which supports a female die holder 36. The inner end of the sleeve 35 is enlarged as indicated at larged annular recess 42 in which is seated the enlarged end of the die holder 36.

block provided with a die chamber2.

I ated in the annular seat of the die holder 36.

50 designates a female die which is situios understood that the ears or projections 26 In order that the female die 50 may be readily adjusted transversely and moved into axial alinement with the die.5 the, opening through the sleeve is eccentrically situated. The opening through the die holder 36 is also eccentrically situated. It will be apparent, therefore, that by rotating either the sleeve 35 or the die holder 36,

wardly is limited. It is evident that by ad-' justing the nut 33 so as to space the sleeve 34: from the end of the member 25 the distance between the female die and the point of the male die may be increased.

It will be understood that in assembling the parts the-members 33, 35 and 36 and the female die 50 may be assembled as indicated in Fig. I of the drawings, after which the member 33 may be screwedinto the member 25. This may be done either before or after the member 25 is placed in position. in the recess 20. In placing said member 25 in posit-ion in the recess 20 it will be are first inserted into the notches or spaces 23 after which'the said member 25 may be turned so as to. bring the projections 26 underneath the inwardly extending projections 22, as is clearly shown in Fig. 2 of the drawings. e

If preferred the retaining or holding nut 33 may be first screwed-into the member 25 after, which the other parts 35, 36,etc., may be assembled.

It is apparent from the drawings and from the above description that by my invention I have provideda construction in which the female dies may be readily in-- serted into and removed from operative position with respect to the codperating male die.

It should be understoodthat sleeves 35, die holders 36 and dies 50 of difi'erent inter-' nal diameters from those shown may be substituted so that female dies and holders of difl'erent sizes may housed in connection with the retaining or holding plug 33 an the detachable support or carrier 25. s

I claim 1. In a tube making machine the combination of a block having a die chamber therein and having a recess adjacent to one end thereof, said block also having probe moved into;

jections extending inwardly over the said recess, said projections being spaced from each other, a die support having radial projections which are adapted to be inserted through said spaces into the said recess and thereafter turnedinto position underneath the projections upon the said block, a sleeve removably secured in the said support and having an enlarged inner end and a shoulder, a die holder supported in the said sleeve and having an enlarged inner end portion and a 'shoulder situated in the enlarged inner end portion of said sleeve with their shoulders in contact and a die supported in the said. holder, substantially as described.

2. A die support adapted to be attached and detached from a tube making machine, said support including a tubular member having means whereby it is adapted to be attached and detached from the diechamber block of such machine,-said tubular member being internally screw-threaded, a sleeve supportedv in the said tubular member mid sleeve having an enlarged end and a shank portion and having a shoulder intermediate the two portions and also having an annular chamber in its enlarged end, a'retaining plug having screw-threaded connection with the said supporting member and surrounding the shank of the said sleeve memher and having its inner end in contact with the said shoulder, a die holder situated within the said sleeve and having an enlarged end seated within the said annular chamber in the said sleeve saiddie holder having an annular recess formed in its inner end and a die seated within the said .last mentioned annular chamber.

.3. In a tube making machine, the combi: nation of a block having a die chamber therein, a male die supported in said chamber, a tubular member adapted to be detachably secured to the said die chamber block, an eccentric sleeve situated in the said tubular member, means for retaining the said sleeve in position therein, an eccentric die holder situated in and carried by said sleeve, and a die supported upon the inner end of said die holder the said die being adapted to be adjusted transversely of its axis by rotating either the said die holder or the said sleeve or both of them. 7

In testimony that I claim the foregoing as my invention I have hereunto signed my In the presence of M. E. lemon, B. P. SATMAN. 

